近年来稻曲病的危害越来越重,为探讨其田间可靠抽样方法及产量损失估算准确性,作者于1987年和1988年在晚稻黄熟期对稻曲病的田间分布型及抽样技术进行了研究。分布型采用聚块指标(M/M),群聚均数(λ)、K 值指数等聚集度指标及 Iwao 的 M—M 回归和 Tay-lor 幂的法则测定。结果表明,当稻曲病发病较轻时分布属聚集型,当发病较重时(病穗率大于45.8%),分布趋于随机型。抽样技术采用平行跳跃式、对角线式、棋盘式三种方法进行 In recent years, the damage of False smut is more and more serious. In order to discuss the reliable sampling method and the accuracy of yield loss estimation in the field, the authors conducted field distribution and sampling techniques on False smut in 1987 and 1988 the study. The distribution patterns were determined by clustering index (M / M), clustering mean (λ), K-value index and Iwao’s M-M regression and Tay-lor power rule. The results showed that when the smut incidence is relatively low, the distribution is aggregative. When the incidence is relatively high (the rate of diseased ear is more than 45.8%), the distribution tends to be random. Sampling techniques using parallel jump, diagonal, checkerboard three methods